I shot the Arizona State Steel Challenge Match this weekend. I used my four inch 617 and it worked flawlessly. I had no failures to fire and extraction was nice and easy during the entire match. Reaming the cylinders really helped.
Although the gun worked well, I was really in bad shape after helping set up the match. Too much work for this old guy.
I managed to finish but that's about it. Outer Limits was my last stage and I had to shoot it sitting in my walker. Taking the 4 second penalty per run didn't hurt me that much in reality.
So now I have a year to practice for next years State.